Segment Reporting (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015		Dec. 31, 2015
Financial information relating to reporting segments
Revenue		$ 176,386		$ 160,932		$ 503,219		$ 476,391
Royalty Revenue		(139)		1,620		3,422		5,379
Revenues		176,247		162,552		506,641		481,770
Costs applicable to sales	[1]	105,408		120,237	[2]	307,428		354,397	[3]
Amortization		27,763		35,497		93,232		107,560
Exploration		3,706		2,112		7,669		9,957
Write-downs		0		0		4,446		0
Other operating expenses		11,604		11,632		35,848		37,947
Fair value adjustments, net		(961)		5,786		(13,235)		3,657
Interest expense, net		(8,068)		(12,446)		(30,063)		(33,945)
Other, net		(3,635)		(8,893)		(4,178)		(14,257)
Income and mining tax benefit (expense)		54,455		8,260		53,118		8,451
Net income (loss)		69,557		(14,219)		63,660		(64,185)
Assets, Net		1,109,910		1,458,659	[4]	1,109,910		1,458,659	[4]	$ 1,103,310
Capital expenditures		25,627		23,861		71,087		65,158
Palmarejo [Member]
Financial information relating to reporting segments
Revenue		30,663		49,187		108,748		127,455
Royalty Revenue		0		0				0
Revenues		30,663		49,187		108,748		127,455
Costs applicable to sales		16,033	[5]	34,093	[2]	59,936	[6]	98,695	[3]
Amortization		5,761		8,617		27,815		24,997
Exploration		1,262		1,087		2,625		4,047
Write-downs		0
Other operating expenses		305		303		898		940
Fair value adjustments, net		(110)		2,998		(5,814)		1,882
Interest expense, net		(184)		(928)		(1,343)		(3,112)
Other, net		(2,223)		(7,870)		(7,818)		(9,478)
Income and mining tax benefit (expense)		35,671		10,370		38,922		9,836
Net income (loss)		40,456		9,657		41,421		(2,096)
Assets, Net		430,716	[5]	653,501	[4]	430,716	[5]	653,501	[4]
Capital expenditures		10,012		10,514		27,690		30,421
Rochester [Member]
Financial information relating to reporting segments
Revenue		37,946		34,638		103,689		115,010
Royalty Revenue		0		0				0
Revenues		37,946		34,638		103,689		115,010
Costs applicable to sales		21,783	[5]	25,436	[2]	65,989	[6]	81,221	[3]
Amortization		5,244		6,731		15,994		18,962
Exploration		129		49		426		1,272
Write-downs		0
Other operating expenses		703		742		2,084		2,190
Fair value adjustments, net		(851)		1,752		(5,787)		596
Interest expense, net		(157)		(168)		(509)		(598)
Other, net		17		1		(3,840)		(38)
Income and mining tax benefit (expense)		7,844		(1,053)		7,429		(1,753)
Net income (loss)		16,940		2,212		16,489		9,573
Assets, Net		212,477	[5]	192,348	[4]	212,477	[5]	192,348	[4]
Capital expenditures		3,383		5,281		10,557		14,451
Kensington [Member]
Financial information relating to reporting segments
Revenue		40,164		30,466		112,376		116,971
Royalty Revenue		0		0				0
Revenues		40,164		30,466		112,376		116,971
Costs applicable to sales		26,709	[5]	24,973	[2]	73,738	[6]	81,844	[3]
Amortization		8,046		8,499		26,203		32,738
Exploration		1,208		217		2,138		2,311
Write-downs		0
Other operating expenses		263		254		772		1,015
Fair value adjustments, net		0		0				0
Interest expense, net		(30)		(51)		(107)		(172)
Other, net		(7)		1		(26)		(16)
Income and mining tax benefit (expense)		0		406		0		(587)
Net income (loss)		3,901		(3,122)		9,392		(1,712)
Assets, Net		192,204	[5]	193,712	[4]	192,204	[5]	193,712	[4]
Capital expenditures		8,602		5,522		24,228		14,380
Wharf [Member]
Financial information relating to reporting segments
Revenue		39,316		27,986		101,250		48,359
Royalty Revenue		0		0				0
Revenues		39,316		27,986		101,250		48,359
Costs applicable to sales		19,697	[5]	17,777	[2]	49,500	[6]	34,410	[3]
Amortization		6,461		5,642		15,640		9,133
Exploration		2		0		2		0
Write-downs		0
Other operating expenses		521		517		1,702		1,188
Fair value adjustments, net		0		0				0
Interest expense, net		(22)		0		(49)		0
Other, net		45		53		259		108
Income and mining tax benefit (expense)		30,208		(907)		29,972		(495)
Net income (loss)		42,866		3,195		64,588		3,241
Assets, Net		105,456	[5]	124,754	[4]	105,456	[5]	124,754	[4]
Capital expenditures		567		665		3,488		1,959
San Bartolome [Member]
Financial information relating to reporting segments
Revenue		27,485		17,391		73,948		62,304
Royalty Revenue		0		0				0
Revenues		27,485		17,391		73,948		62,304
Costs applicable to sales		20,813	[5]	17,483	[2]	56,955	[6]	55,767	[3]
Amortization		1,723		3,526		5,330		13,487
Exploration		0		54				132
Write-downs		0
Other operating expenses		1,165		1,059		2,532		1,544
Fair value adjustments, net		0		0				0
Interest expense, net		(8)		(100)		(18)		(674)
Other, net		549		347		1,275		1,219
Income and mining tax benefit (expense)		5,905		(1,029)		5,182		(2,240)
Net income (loss)		10,230		(5,513)		15,570		(10,322)
Assets, Net		81,704	[5]	165,931	[4]	81,704	[5]	165,931	[4]
Capital expenditures		3,001		1,786		4,839		3,729
Coeur Capital [Member]
Financial information relating to reporting segments
Revenue		812		1,264		3,208		6,292
Royalty Revenue		(139)		1,620		3,422		5,379
Revenues		673		2,884		6,630		11,671
Costs applicable to sales		373	[5]	475	[2]	1,310	[6]	2,460	[3]
Amortization		138		1,983		1,019		6,753
Exploration		70		(362)		276		(212)
Write-downs		0				4,446
Other operating expenses		64		(38)		239		(8)
Fair value adjustments, net		0		0				0
Interest expense, net		(34)		0		(34)		0
Other, net		2,974		(455)		6,716		(2,904)
Income and mining tax benefit (expense)		3,803		291		236		266
Net income (loss)		6,771		662		6,258		40
Assets, Net		9,148	[5]	51,553	[4]	9,148	[5]	51,553	[4]
Capital expenditures		0		0		0		0
Other Mining Properties [Member]
Financial information relating to reporting segments
Revenue		0		0		0		0
Royalty Revenue		0		0		0		0
Revenues		0		0		0		0
Costs applicable to sales		0	[5]	0	[2]	0	[6]	0	[3]
Amortization		390		499		1,231		1,490
Exploration		1,035		1,067		2,202		2,407
Write-downs		0				0
Other operating expenses		8,583		8,795		27,621		31,078
Fair value adjustments, net		0		1,036		(1,634)		1,179
Interest expense, net		(7,633)		(11,199)		(28,003)		(29,389)
Other, net		(4,990)		(970)		(744)		(3,148)
Income and mining tax benefit (expense)		(28,976)		182		(28,623)		3,424
Net income (loss)		(51,607)		(21,310)		(90,058)		(62,909)
Assets, Net		78,205	[5]	76,860	[4]	78,205	[5]	76,860	[4]
Capital expenditures		62		93		285		218
United States [Member]
Financial information relating to reporting segments
Revenue		117,425		93,091		317,315		280,340
Mexico [Member]
Financial information relating to reporting segments
Revenue		30,663		50,170		109,674		129,753
BOLIVIA
Financial information relating to reporting segments
Revenue		27,485		17,391		73,948		62,304
Australia [Member]
Financial information relating to reporting segments
Revenue		812		1,264		3,207		6,292
Other Foreign Countries [Member]
Financial information relating to reporting segments
Revenue		$ (138)		$ 636		$ 2,497		$ 3,081

[1] Excludes amortization.

[2] Excludes amortization

[3] Excludes amortization

[4] Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests

[5] Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interest

[6] Excludes amortization